The invention discloses a pyroceram-ceramic composite plate. The pyroceram in the composite plate consists of main materials and antimony trioxide (Sb2O3), wherein the Sb2O3 accounts for 0.8 to 1.2 percent of the total weight of the main materials; and the main materials consist of the following components in percentage by weight: 45 to 55 percent of silicon dioxide (SiO2), 4 to 10 percent of magnesium oxide (MgO), 15 to 20 percent of calcium oxide (CaO), 10 to 14 percent of aluminum oxide (Al2O3), 3 to 6 percent of sodium oxide (Na2O) or potassium oxide (K2O) and 6 to 10 percent of calcium fluoride (CaF2). The invention also discloses a method for preparing the pyroceram-ceramic composite plate. The method comprises the following steps of: 1) mixing the main materials and the Sb2O3 uniformly and heating the mixture; 2) pouring the obtained glass liquid into an iron mould to form and cool, then annealing, and preparing the obtained mother glass into glass powder and glass particles respectively; and 3) paving and scattering the glass powder and the glass particles on the conventional ceramic plate sequentially and then performing heat treatment. The pyroceram-ceramic composite plate has the characteristics of lower cost and high glossiness.